A DIY secondary burn wood stove is an innovative and efficient way to heat your home while minimizing fuel consumption and emissions. In this guide, we will provide you with a clear and concise overview of what a secondary burn wood stove is, and how you can build one yourself, whether you’re technically inclined or a DIY enthusiast.
Understanding the Secondary Burn Wood Stove Concept
A secondary burn wood stove is designed to burn wood more efficiently by introducing a second combustion process. This process ensures that more of the wood’s energy is extracted and less smoke is released into the environment. The key features of a secondary burn wood stove include:
Reburn Chamber: This is a secondary combustion chamber located above the main firebox. It’s designed to burn the gases and particulates that escape the primary combustion, significantly reducing emissions.
Airflow Control: Secondary burn stoves have a system to control the flow of air into both the primary and secondary combustion chambers. This control allows you to optimize the burning process for efficiency.
Building Your DIY Secondary Burn Wood Stove
Now, let’s get into the nitty-gritty of constructing your own secondary burn wood stove.
Materials You’ll Need:
Steel Barrel: This will be the body of your stove. Ensure it’s clean and free of any hazardous materials.
Pipe: You’ll need a length of steel pipe for the chimney. Ensure it’s long enough to safely vent the smoke away from your living space.
Fire Bricks: These will be used to line the inside of the barrel and create the combustion chambers.
Air Inlets: You’ll need two air inlets – one for the primary combustion chamber and another for the secondary combustion chamber.
Tools You’ll Need:
Welder: To attach the air inlets and create the secondary combustion chamber.
Angle Grinder: For cutting and shaping metal parts.
Construction Steps:
Safety First: Ensure you are working in a well-ventilated area and wear appropriate safety gear, including gloves and eye protection.
Barrel Preparation: Cut the barrel horizontally, making one section for the lower part of the stove and another for the upper part. The upper part will serve as the secondary combustion chamber.
Primary Combustion Chamber: Line the lower part of the barrel with fire bricks, leaving enough space for the primary air inlet. This area is where the wood will burn initially.
Secondary Combustion Chamber: In the upper part of the barrel, install fire bricks to create a reburn chamber. Connect this chamber to the secondary air inlet, allowing for proper airflow control.
Chimney Installation: Weld a steel pipe to the upper section of the barrel to act as a chimney. Ensure it’s securely attached and directs the smoke away from your home.
Air Control: Install dampers on both the primary and secondary air inlets to control airflow.
Test and Fine-Tune: Before you use your stove for extended periods, light a small fire to test the draft, airflow, and combustion. Make any necessary adjustments.
Conclusion
A DIY secondary burn wood stove can be a cost-effective and environmentally friendly way to heat your home. By understanding the key components and following the construction steps outlined in this guide, you can create a highly efficient wood stove that not only keeps you warm but also reduces emissions and fuel consumption. Remember to prioritize safety throughout the building process and regularly maintain your stove for optimal performance.